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11
OPERATION
INSTALLING AND REMOVING SOCKETS
See Figure 4.
Use only sockets designed for impact wrenches. Always se-
lect the correct size impact socket for nuts and bolts. Using
the wrong size socket may damage the nut or bolt and cause
the fastening torque to be inaccurate or inconsistent.
n Unplug the wrench.
n Push the socket onto the drive shank until the detent pin
locks it into place.
n To remove the socket, pull it away from the drive
shank.
OPERATING THE IMPACT WRENCH
See Figure 5.
Proper fastening torque may be determined by the kind of
bolt, the size of the bolt or the material or the workpiece. It
is helpful to perform a test operation to determine the proper
fastening time for the nut or bolt you are using. While per-
forming the test, make note of the speed selection.
n Hold the tool pointed straight at the nut or bolt.
n Depress the switch and fasten for the proper fastening
time.
n After fastening, always check the torque with a torque
wrench.
NOTE: Do not use this tool to install lug nuts on wheels
without a torque limiting device. Doing so could result in
galled or broken lugs.
IMPACT TIME
Many variables exist that will cause the available torque of
the fastener to vary considerably. The optimum impact time
is approximately 6 seconds.
NOTE: Using a universal joint or extension bar may reduce
the fastening force of the impact wrench and require longer
fastening time.
Fig. 4
DRIVE SHANK
SOCKET
Fig. 5
TO
REMOVE
TO
INSTALL